<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type='info' @click='logout'>退出</el-button>
    </el-header>
    <!-- 主体 -->
    <el-container>
      <!-- 左侧 -->
      <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click='toggleCollapse'>|||</div>
        <el-menu :default-active='activePath' :router='true' :collapse-transition='false' :collapse='isCollapse'
          background-color="#333733" text-color="#fff" active-text-color="#409eff" unique-opened>
          <!-- 一级菜单 -->
          <el-submenu v-for='item in menulist' :key='item.id' :index="item.id+''">
            <!-- 一级菜单的模板区 -->
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item @click='saveNavState("/"+subItem.path)' v-for='subItem in item.children' :key='subItem.id'
              :index="'/'+subItem.path+''">
              <!-- 二级菜单的模板区 -->
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
  export default {
    name: 'Home',
    data() {
      return {
        menulist: [],
        iconsObj: {
          '125': 'iconfont icon-user',
          '103': 'iconfont icon-tijikongjian',
          '101': 'iconfont icon-shangpin',
          '102': 'iconfont icon-danju',
          '145': 'iconfont icon-baobiao'
        },
        isCollapse: false,
        // 激活的连接地址
        activePath: ''
      }
    },
    methods: {
      logout() {
        window.sessionStorage.clear()
        this.$router.push('/login')
      },
      // 获取菜单
      async getMenuList() {
        const { data: res } = await this.$http.get('/menus')
        // console.log(res.data);
        if (res.meta.status !== 200) return this.$message({ type: 'error', message: res.meta.msg })
        this.menulist = res.data
      },
      // 点击按钮切换折叠和展开
      toggleCollapse() {
        this.isCollapse = !this.isCollapse
      },
      // 保存菜单的激活状态
      saveNavState(activePath) {
        window.sessionStorage.setItem('activePath', activePath)
        this.activePath = activePath
      }
    },
    created() {
      this.getMenuList(),
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    components: {

    }
  }
</script>

<style scoped>
  .home-container {
    height: 100%;
  }

  .el-header {
    background-color: #37314d;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    color: #fff;
    font-size: 20px;
    align-items: center;
  }

  .el-header div {
    display: flex;
    align-items: center;
  }

  .el-header div span {
    margin-left: 15px;
  }

  .el-aside {
    background-color: #333733;
  }

  .el-aside .el-menu {
    border-right: none;
  }

  .el-aside .toggle-button {
    height: 24px;
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;

    letter-spacing: 0.2em;
    cursor: pointer;
  }

  .iconfont {
    margin-right: 10px;
  }

  .el-main {
    background-color: #eaedf1;
  }
</style>